<!--父组件:控制除登录页意外的所有子组件的公共头部的左侧菜单栏-->
<template>
    <div style="display: flex;">
      <!-- 左侧菜单栏 -->
      <div :style="{width:(isCollapse ? '64px' : '208px')}">
        <el-menu
            background-color="#3282f5"
            style="width: 100%;height: 100vh;"
            text-color="#fff"
            active-text-color="#ff0"
            :collapse="isCollapse"
            :collapse-transition="false"
            unique-opened
            router>
<!--          左侧菜单栏顶部条-->
          <el-row style="padding-top: 10px;">
            <el-col :span="2"></el-col>
            <el-col :span="7" style="padding-left: 7px">
              <el-avatar src="/imgs/admin/logo.png" style="width: 35px;height: 35px;"></el-avatar>
            </el-col>
            <el-col :span="isCollapse ? 0 : 13">
              <span style="color: #fff;font-weight: bolder;position:relative;top: 8px;left: 2px;">
                智慧车辆
              </span>
            </el-col>
          </el-row>
          <el-sub-menu index="1">
          <template #title>
            <el-icon style="font-size: 21px;"><User/></el-icon>
            <span>用户管理</span>
          </template>
          <el-menu-item index="/user">用户列表</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="2">
          <template #title>
            <el-icon style="font-size: 21px;"><Van/></el-icon>
            <span>车辆管理</span>
          </template>
          <el-menu-item index="/vehicle">车辆列表</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="3">
          <template #title>
            <el-icon style="font-size: 21px;"><Location/></el-icon>
            <span>围栏管理</span>
          </template>
          <el-menu-item index="/geofence">围栏列表</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="4">
          <template #title>
            <el-icon style="font-size: 21px;"><Place/></el-icon>
            <span>调度管理</span>
          </template>
          <el-menu-item index="/application">用车申请</el-menu-item>
          <el-menu-item index="/audit">申请审批</el-menu-item>
          <el-menu-item index="/distribute">车辆分配</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="5">
          <template #title>
            <el-icon style="font-size: 21px;"><MessageBox/></el-icon>
            <span>字典管理</span>
          </template>
          <el-menu-item index="/dict">字典列表</el-menu-item>
        </el-sub-menu>
      </el-menu>
    </div>
    <!--      右侧主体内容-->
      <div :style="{width:(isCollapse ? 'calc(100% - 64px)' : 'calc(100% - 208px')}">
        <el-header style="padding-top: 22px;height: 10vh;background-color: #fff">
          <!--        右侧公共顶部条-->
          <el-row>
            <el-col :span="18">
              <el-icon style="font-size: 21px;" @click="changeCollapsed"><Expand/></el-icon>
            </el-col>
            <el-col :span="6" style="position: relative;">
              <el-dropdown trigger="click" style="position: absolute;right: 20px;">
              <span style="font-size: 19px;font-weight: bold;">
                {{ user. username }}
                <el-icon><arrow-down /></el-icon>
              </span>
                <template #dropdown>
                  <el-dropdown-menu>
                    <el-dropdown-item @click="logout">退出登录</el-dropdown-item>
                  </el-dropdown-menu>
                </template>
              </el-dropdown>
            </el-col>
          </el-row>
          <el-breadcrumb separator="/" style="position: relative;top: 20px;">
            <el-breadcrumb-item>首页</el-breadcrumb-item>
            <el-breadcrumb-item v-for="item in breadcrumb">{{ item }}</el-breadcrumb-item>
          </el-breadcrumb>
      </el-header>
      <el-main>
<!--        右侧主体内容(可变区域)-->
        <router-view/>
      </el-main>
    </div>
  </div>
</template>

<script setup>
import {onMounted, ref} from "vue";
import {useRoute, useRouter} from "vue-router";

//定义变量用来控制左侧菜单栏是否折叠
const isCollapse = ref(false);
const changeCollapsed = ()=>{
  isCollapse.value = !isCollapse.value;
}
const user = ref(getUser());
const logout = ()=>{
  if(confirm('您确认要退出登录吗？')){
    localStorage.removeItem('user');
    window.location.href = '/login';
    user.value = '';
  }
}
const breadcrumb = ref([]);
let map = {
  '/user':['用户管理','用户列表'],
  '/vehicle':['车辆管理','车辆列表'],
  '/geofence':['围栏管理','电子围栏'],
  '/application':['调度管理','申请列表'],
  '/audit':['调度管理','调度审核'],
  '/distribute':['调度管理','用车分配'],
  '/dict':['字典管理','字典列表']
};
const route = useRoute();
const updateBreadcrumb = (route)=>{
  const path = route.path;
  breadcrumb.value = map[path];
}
onMounted(()=>{
  updateBreadcrumb(route);
})
const router = useRouter();
router.beforeEach((to,from,next)=>{
  updateBreadcrumb(to);
  next();
})
</script>